Stovepipe.



Patented Apr. 29,1902. 9. s.- BARCLAY.

STOVEPIPE. (Application filed 51 841. 28, 1901.)

(No Model.)

UNITED STATES GEORGE B. BARCLAY,

PATENT OF ICE.

OF J OLIET, ILLINOIS.

STOVEPIPE.

SPECIFICATION forming part of Letters Patent No. 698,623, dated April29, 1902.

Application filed January 28, 1901. $erial No. 44,968. (No model-l I 7To all whom it may concern:

Be it known that I, GEORGE B. BARCLAY, a subject of the King of GreatBritain, residing at J oliet, in the county of Will and State ofIllinois, have invented certain new and useful Improvements inStovepipes, of which the following is a specification.

My invention relates to a novel construc-' tion in stovepipes andalliedstructures, and is designed to produce a joint or section, moreespecially an elbow-joint, that can be knocked down and nested forconvenience of transportation and which can be readily put togetherwithout tools when the pipe is ready to be put up.

To illustrate my invention, I annex hereto a sheet of drawings, in whichthe same reference characters are used to designate identical parts inall the figures, of which Figure 1 is a perspective View of an elbowjoint embodying my invention. Fig. 2 is a perspective detail of theouter joint on an enlarged scale. larger scale, in section on the line 33 of Fig. 2. Fig. 4 is a perspective detail of one end of the outerjoint. Fig. 5 is a plan view of a portion of the edges forming the innerjoint before they are put together. Fig. 6 isa side elevation of thesame parts in section on the line 6 6 of Fig. 5. Fig. 7 is a plan viewof the edges shown in Fig. 5 connected, and Fig. 8 is a side elevationof the parts shown in Fig. 7. In Figs. 5 to 8 for convenience ofillustration the curve of the metal is not shown, but the parts arerepresented as flat, whereas they are curved laterally andlongitudinally as seen in Fig. 1.

The halves a and b are preferably stamped up from sheet metal in theshape desired, with or without the creases o. (Indicated in dotted linesin Fig. 1.) Stamped out of the halves near their inner edges and theirends are the tongues d, whichwhen the edges are brought together overlapthem, as shown in Fig. 8. On one of the edges just opposite the tonguesd on the other half are cut the slits e, which leave between them atongue f,

which when the edges are united passes through the aperture formed inthe other half when the tongue at is stamped out. The tongues fare thenbent back, as shown in Figs. 7 and 8, and serve to unite the halves Fig.3 is a detail, on a still securely by these edges. To form the outerjoint so that it will be to a certain extent expansible and, adjustable,I form on one edge a deep channel, which is preferably made by attachingto said edge a sheet-metal strip 9, which is bent into a flattened-Sshape, one fold 71," of which fits over the edge of the half a and ispreferably secu red thereto by tongues j, similar to the tonguefandformed on the edge, passing through apertures 70, cut in the fold 7L,and bent back, as clearly shown in Fig. 2. This fold h, which is on theoutside, preferably has its edge turned back and underneath a littledistance, as shown at Z, so that no sharp edge will be exposed. The

strip g is preferably secured upon the half a 1 before the pipe leavesthe factory. When the pipe is put up after the inner joint has beenmade, the outer edge of the half I) is slipped into the inner fold m ofthe strip g and is preferably secured at the end which is overlapped bythe adjacent joint by means of a tongue 72, formed at that end of thehalf I), being passed through a notch 0, formed in theend of the fold m,and bent back.

It will be seen that by my invention I have produced a knockdown jointor section that can be readily assembled or taken apart without the useof any special tools and that is capable of a certain amount ofadjustment in use, inasmuch as the end that does not have its outer edgeconnected can expand to accommodate itself to different sizes ofsections which it may overlap.

The structure which I have devised is simple and inexpensive tomanufacture and is at the same time strong and durable.

While I have shown my'invention as em= bodied in the form which I atpresent consider best adapted to carry out its purposes, it will beunderstood that it is capable of modifications and that I do not desireto be limited in theinterpretation of the following claims except as maybe necessitated by the state of the prior art.

What I claim as new, and desire to secure by Letters Patent of .theUnitedStates, is-

1. As a new article of manufacture,aknockdown pipe-section made of twosemicylindrical halves, both halves being provided near one edge withthe overlapping tongues d and one half being provided with theturned-back one half, and into which the corresponding edge of the otherhalf projects so it can be moved therein; substantially as described.

3. Asanewarticleof|nanufacture,aknockdown pipe-section made of twoseniicylindrical halves, means for rigidly securing said halves at onepair of edges, the flattened-S shaped strip 9 secured to the other edgeof i one half by the turned-back tonguesj on said edge passing throughthe apertures 70 in said strip, and into which the corresponding edge ofthe other half projects so that it can be moved therein; substantiallyas described.

4. As a new article of manufacture,a knockdown pipe-section made of twose'micylindrical halves, means for rigidly securing said halves at onepairof edges, the flattened strip g secured to the other edge of onehalf by the turned-back tongues j on said edge passing through theapertures k in said strip which is provided with the groove m'into whichthe corresponding edge of the other half projects so that it can bemoved therein, and connections at one end consisting of the turned-backtongue 11 passing through the notch 0; substantially as and for thepurposes described. 35

GEORGE B. BARCLAY.

\Vitnesses:

ANNA M. WAGNER, GEORGE B. HARBAUGH.

